1 Subjects: “...Adult Education as a Means to Active Participatory Citizenship...”

2 Subjects: “... training, Heterogeneity, Skill development, Oligophrenia, Adult education, Adult training, Interviews...”

3 Subjects: “...young adult...”

4 Subjects: “...adolescents and young adults...”

5 Subjects: “...older adults...”

6 Subjects: “...older adults...”